Folding cylinder



March 7, 1933. c JRDHOY 1,900,288 FOLDING CYLINDER I Original Filed Aug. 21, 1950 5 Sheets-Sheet l 7 0/74 iiarikga.

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x x t A n Ah/! I iatented Mar. 7, 1933 UNITED STATES PATENT o FIcE HANS G. JORDHOY, OF NORTH PLAINFIELD NEW JERSEY, ASSIGNOR TO WOOD NEWS PAPER- MACHINERY CORPORATION, OF NEW YORK, N. Y., A CORPORATION OF VIRGINIA FOLDING CYLINDER Application filed August 21, 1930, Serial No. 476,763. Renewed July 29, 1932.

This invention relates to a folding cylinder for folding newspapers and the like.

The principal objects of this invention are to provide a three part folding cylinderwhich is self-contained and'which may be easily removed or installed in a'folder' by lifting the whole mechanism out intact; to'provide individual closed-path cams for'each of the three pin motions suitable for operating at high speeds; to provide novel means for operating the pin cams on straight and collect runs; to provide single and novel means for driving the folding blade arm shaft comprising a minimum number of gears enclosed within the folding cylinder itself where they are not'exposed, and to provide a rigid folding cylinder havinga solid bearing for'the folding blade arm shaft.

Other objects and advantages of the tion will appear hereinafter.

Reference is to be had to the accompanying drawings, in which 7 Fig. 1 is an end view'of a folding couple showing the folding cylinder in transverse section on the line 11 of Fig. 2, and provided with a preferredembodiment of this invention;

Fig. 2 is adiametrical longitudinal sectional view of the folding cylinder, showing the gearing in position forrunning at full speed on a straight run;

Fig. 3 is a transversesectional view on the line 33 of Fig. 2;

Fig. 43 is atransverse sectional View on the line 44 of Fig.2, looking in the same direc tion;

Fig. 5 is asectional view on the line 55 of Fig. 2, showing the cylinder in end elevation;

inven- Fig. 6 is a sectionalv view on theline 6'6 of Fig.2; Fig. 7 is a longitudinal sectional view of the parts surroundingt-hestationary stud at one end of the cylinder, similar to-lFig- 2, and showing the double gear shifted to a different position for running at half speed on a collect run; c

Fig. 8 is an end viewof the yoke for shifting this double gear, and Fig. 9 is asectional View of the. friction means for driving one of the folding blades, taken on a radial line.

Thisinvention relates wholly to the folding cylinder of a folding couple. of the folding machine supports the folding cylinder 2 which is driven through a driving gear 3 secured to the end of the folding cylinder. This is the single point from which the whole mechanism is driven, and of course is rotated by the usual gearing.

The frame is provided with cylindrical openings through it and the cylinder 2 is supported by two stationary studs 7 and 13 carried thereby. These studs are not exactly alike. through the frame so that it is stationary and is secured in fixed positionlongitudinally by a clamping washer 8 and bolt 9. On the other side-0f this part of the frame is a spacing washer 58 hearing against the frame and against the inner race of a ball bearing 6, the outer race of which is fixed to an opening in the end of the cylinder. i

- On the other end the stud: 13 is similarly secured bya clamping Washer 16 and bolt 17 at the outer end, and a clamping washer 59 at the inner end. The stud passes through this clamping washer into the interior ofthe folding'cyli'nder andthe two washers 16 and 59 are located at opposite ends of a sleeve 15. The sleeve 15 and clamping washer 59 engage opposite sidesof the inner race of a ball-bearing 4, the outer race of which supports this end of 'the folding cylinder 2 in the same way as the ball-bearing 6. The sleeve 15'is keyed to the frame 1 and the stud 13 by keys 61 and 62 respectively, thereby preventing any rotary movement.

On the inner end of the stud 13 is the inner race of a ball bearing5, the outer race of The frame 1 which is fixed to an internal transverse partition in the cylinder 2. Thus this cylinder is supported by the three ball bearings 4, 5 and 6, all concentric with the cylinder, of course, constituting the entire supporting means. Of course the two studs, as well as the sleeve 15 are stationary.

The stud 7 is provided with an offset projection which serves as a seat for the outer stationary -race of a ball bearinglO which supports one end of the folding blade arm shaft 11. The other end of this shaft is supported by a ball bearing 12, the outer race of which is fixed in an offset projection on the end of the stud 13, so that this shaft is mounted in stationary hearings, in which it is rotatable on its own aXis. On the stud 13 is a sleeve 14 which is keyed to the stud so that it is stationary and serves as a spacer between the spacing washer 59 and the inner race of .the ball bearing 5 against the ends of which it bears, all of these parts being stationary.

It will be seen from the construction shown that the rigid folding cylinder which carries the outer race of the ball bearing 5 imparts rigidity to the overhung stud 13, thereby pro viding a solid bearing for the folding blade arm shaft at theinner end of this stud.

Heretofore folders of this type have had their folding blade arm shaft driven by a train of gears outside the frame, necessitating a large number of gears and taking up considerable space. These gears had. to be protected. By the simple arrangement shown only two gears are required in place of these trains of gears and they are enclosed within the folding cylinder proper.

- A- cap 18, around which the gear 3 is mounted, is detachably secured to the end of the cylinder and facilitates the assembling of the device. On this cap is detachably secured an internal gear 19 which is concentric with the folding cylinder and meshes with. a gear 20 secured to the folding blade arm shaft 11. Thus rotary motion is imparted to the folding blade arms 21 keyed tothe shaft 11. This is done through the rotation of the folding cylinder only. The ratio of these gears is such that the folding blade arms make three revolutions while the folding cylinder makes two.

Each folding blade 23 is mounted on a shaft 22which is mounted in ball bearings 25, three of them being shown for each shaft. These ball bearings are carried on the folding blade arms 21. Between the inner races of two of these ball bearings, which are spaced apart near one end of each of these shafts, are carried two friction blocks 27 which are pressed against a central tongue section of a gear 28 through a spacer 29 and lock-nuts 30 on the shaft. This provides a friction drive, allowing adjustment of the folding blade. Furthermore, in case of a am, one folding blade may stop rotating by overcoming the resistance between these friction surfaces and thus prevent damage which would occur if the connection were rigid.

The rotation of the folding blade shaft 22 1s accomplished in the customary manner by a stationary gear 31 secured to the offset projection on the stud 13, and concentric with the shaft 11. This gear meshes with two intermediate gears 32, each of which in turn meshes with a gear 28. The inter di t gears are mounted in the arms 21 and the gears 28, as stated, are mounted on and drive the folding blade shafts 22 by friction to give the folding blades their rotary motion around the center of the folding blade shaft.

As will be seen in Fig. 1, one of the inter mediate gears 32 is mounted on an eccentric stud 26. When the folder is running collect the rotation of this eccentric stud will throw this intermediate gear 32 out of mesh with the stationary gear 31, thereby silencing that particular folding blade shaft. This is accomplished by moving a bolt 33 and shifting the stud approximately ninety degrees in a clockwise direction from the position shown in Fig. 1. Then the bolt 33, with which the arm on the stud 26 is provided, is inserted in a tapped hole 35 in the proper position. A pin 36 is provided in the folding blade arm 21 so that the revolving of the eccentric stud will disengage the intermediate gear 32 from the gear 31, which causes the path of the intermediate gear to interfere with the pin 36. This locks the folding blade in ino'g'verative position.

()n the sleeve 14, which is keyed to the stud 13, a double gear 37 is mounted on a feather to allow it to move back and forth under proper control but prevent any rotary motion. This end motion of the gear 37 is for the purpose of allowing the meshing of its two gears 42 and 43 with either one of two sets of three gears 44 and 45 of different sizes fixed together. In one case the pin cam grooves 46 on the gears 44 operate at full speed on a straight run, or in the other case, at half speed on a collect run. The longitudinal shifting of the gear 37 is accomplished through shoes 38 which enter a circumferential groove in the gear 37 and are oscillatably carried on a yoke 39. This yoke is pivoted on the main frame 2 of the folding cylinder.- To the other end of the yoke 39 is pivotally attached a link 40 which is secured to the cylinder 2 by a bolt 41. Fig. 2 shows the mechanism in a position for running straight. In order to run collect the bolt 41 is removed and inserted in the outer hole of the link 40. This disengages the teeth I of the gear 42 from the three gears 45 and engages the teeth 43 with the three pin cam gears 44.

Each pin cam gear 44 is mounted on a stud 47 by means of ball bearings. The gear 45 is concentrically mounted on the hub of the gear 44 and is secured thereto by a bolt 48, which is used both as a clamping bolt and as a locating member. It is necessary for the pin cams to be shifted relatively to each other when there is a change made from straight run to a collect run, and this bolt 48 is used to locate the cams in the proper position when such a shift is made.

The pin crank shaft 49 is oscillatably mounted in ball bearings 50 at the two ends CTI of the cylinder, and ina sleeve bearing. 52 carried near the middle of the cylinder. The pin crank shaft 49 carries on its right-hand end a, projecting stud 53v and-ball bearing 54, which fits in the groove 46 in the cam gear 44. Thus the operation of the shaft 49 is controlled. The pin arm 55, holder56, and pin point 57 are-shown as of. the usual construction.

Inthe position shown in Fig. 2', the pin arm gear 44 makes one revolution on its own axis to each single revolution of the folding cylinder 2. The shape of the closed cam path 46 is such that the pin point is withdrawn. for a brief span just as the product isfolded off. When running straight the pin is withdrawn at this particular position of the folding cylinders rotation. However, when the folder is run collect. the speed of the cam gear 44 is cut in half, so that the pin is withdrawn only on alternate revolutions.

In order to time the pin cam correctly for withdrawing on a collect run, the position of the folding cylinder is set to a line on the frame, so that one pin cam is just withdrawing its pin and the shifting gear 37 from the straight run position shown in Fig. 2 to the collect run position. Thus that one pin cam is timed correctly for withdrawing at the right time on a collect run. The other two pin cams, however, would not be in correct time for a collect run. It would be necessary to remove the bolt 48 from the position shown in Fig. 6 to a tapped hole 60. When this is done the gear teeth '43 will mesh properly with the three cam gears 44, and the gear 37 can be moved longitudinally out of mesh with the threegears 45 and intermesh with the three gears 44. The timing and clamping bolt 48, shown in all three of these cam gears 44, is provided so that if desired change from straight to collect run can be made at some other position of one particular set of pins. This arrangement of a closed pin cam motion is very important because of the marked tendency of printing establishments to use high speed presses. Heretofore in designs of three-part folding cylinders, pincam motions have been, pos sible only byusing a single side cam with a spring seated roller. This is a much simpler arrangement. Of course, the folding cylinder is used with the usual cutting cylinder 64.

Although I have illustrated and described only a'single form of the'invention I am aware of the fact that modifications can be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the claims. Therefore I do not wish to be limited in this respect but what I do claim is 1. As an article of manufacture, a folding cylinder for a folding couple having its folding blade mechanism contained therein,

and means mounted within the folding cylinder for rotating the folding blade mechanism on its own axis by the rotation of the cylin I der, whereby the folding cylinder can be removedor installed as a whole with the fold;- ing blade operating means, r

2. In .a folding cylinder, the combination with a cylindrical.shellelike structure having a gear fixedon the end for rotating it, two fixed studs at opposite ends on which the ends ofthe structure are rotatably mounted, one of said studs extending inwardly into the cylinder and athird bearing on the inner end of said stud for the cylinder.

3. In a folding machine, the combination with a stationary frame having two parts provided with openings through them in axial alignment with each other, astud none rotatably mounted in one opening, means for fixing the stud positively to the frame, a stud and sleeve'fixedly moun ted, in the other opening, and means for fixing the sleevepositively in the frame, of two sets of ball bearings, the inner recesses of which are carriedby the first named stud and sleeve respectively,iand a shell-like structure constituting the folding cylinder having openings at its ends-for receiving the outer races of said ball bearings, said studs being provided with offsets within the cylinderhaving bearings, and a folding blade arm. shaft carried by the last named bearings within the interior of said structure.

4.. In, a folding cylinder, the combination of a pair of oppositely fixed studs, bearings carried by said studs, and a shell-likestructure supported rotatably on the bearings, of

a gear bolted to the endof said structure through which the same is driven, a-concentric internal gear enclosed within said structure, said studsv having offset stationary bearingsinside the'structure, a folding blade armshaft carried by. said bearings, and

a. gearfixed to said folding blade arm shaft meshing; with the said internal gear, whereby the rotation of said structure will rotate the folding blade arm shaft on. itsown' axis,an d a cap covering the end of the structure, on which said internal gear is locatedwandenclosing the internal gear. i

5. In a folding machine, with .a stationary frame having two parts provided with openings through them in.

the combination at its ends on which it is rotatably mounted, said studs having offsets within the cylinder, a folding blade arm shaft rotatably carried by said ofi'sets, means for rotating the folding blade arm shaft by the rotation of the cylinder, folding blade arms carried by said folding blade arm shaft, folding blades and folding blade shafts rotatably carried by said arms, a gear on each folding blade frictionally connected therewith, a stationary gear, and intermediate vgears meshing with the gears on the folding blade shafts and normally meshing with the stationary gear.

7 In a folding cylinder, the combination with a cylinder proper and stationary studs at its ends on which it is rotatably mounted, said studs having offsets within the cylinder, a folding blade arm shaft rotatably carried by said offsets, means for rotating the folding blade arm shaft by the rotation of the cylinder, folding blade arms carried by said folding blade arm shaft, folding blade shafts rotatably carried by said arms, a gear on each folding blade shaft, a gear carried by the offset on one of said studs, intermediate gears normally meshing with the last named gear and meshing with the gears on the folding blade shafts, means for swinging one of said intermediate gears out of mesh with the gear on said offset, and means by which it can be held out of mesh and locked against rotating.

8. In a folding cylinder, the combination with a cylinder proper and studs on which the cylinder is mounted to rotate, means for rotating the cylinder, a folding blade arm shaft carried on stationary eccentric bearings inside the cylinder, two gears connecting the cylinder with the folding blade arm shaft for rotating said shaft as the cylinder rotates in a predetermined ratio, folding blade shafts carried by the folding blade arm shaft, a stationary gear concentric with the folding blade arm shaft, a gear on each folding blade shaft adapted to be driven by the stationary gear as the folding blade arm shaft rotates, and means for frictionally transmitting rotation from the stationary gear to said shafts frictionally, whereby the folding blades may stop rota-ting by overcoming the frictional resistance for the purpose of preventing damage in case of a jam.

9. In a folding cylinder, the combination with the cylinder and a stationary stud on which it is rotatably mounted at one end, of

a double gear slidably keyed to said stud to prevent its rotation and having two gears thereon of different diameters, a pin cam gear adapted to mesh with the smaller of the two gears, a gear fixed with respect to the pin cam gear and adapted to mesh with the larger of the two gears, and means for sliding the double gear back and forth to change the speed ratio, the pin cam gear having a closed pin cam groove for operating the pins of the cylinder.

10. In a folding cylinder, the combination with the cylinder proper, three pins each having a separate motion, three individual closed-path cams for operating the three pin motions, and a change speed connection for operating all of the three cams.

11. In a folding cylinder, the combination with the cylinder proper, of a plurality of pins each having a separate motion carried within the cylinder, individual closed-path cams inside the cylinder for operating the pin motions, and a change speed connection located within the cylinder for operating all of the cams.

12. As an article of manufacture, a folding cylinder for a folding couple having its folding blade mechanism contained therein, and means mounted within the folding cylinder for rotating the folding blade mechanism on its own axis by the rotation of the cylinder.

13. In a folding cylinder, the combination with the cylinder proper, three pin motions and three individual closed-path cams for operating the three pin motions.

14. In a folding cylinder, the combination with the cylinder proper, of an uneven number of pin motions and an equal number of closed-path cams for operating the pin motions.

15. In a folding cylinder, the combination of a plurality of pin motions with each pin motion operated by an individual cam.

16. In a folding cylinder, the combination of a plurality of pin motions each operated by individual means, with provisions for changing the relationship of the individual operating means.

17. In a folding cylinder, the combination with the cylinder proper, three pin motions, three individual closed-path cams for operating the three pins, each having a separate motion, and a change speed connection for operating all of the three cams.

18. In a folding cylinder, the combination with the cylinder proper, a plurality of pins, each having a separate motion, carriedwithin the cylinder, individual closed-path cams inside the cylinder for operating the pin motions, and a change speed connection located within the cylinder for operating all of the cams.

In testimony whereof I have hereunto affixed my signature.

HANS o. JORDHOY. 

